APPLICATION EXAMPLES
1) STAND ALONE DOOR LOCK
NOTE:
DK-2822
ELECTRIC LOCK
Connect the 1N4004 as close as possible to the lock in parallel with the lock power terminals of the
lock to absorb the back EMF to prevent it from damaging the keypad.
To avoid Electro-Static-Discharge from interfering with the operation of the keypad, always ground
the (-) terminal of the keypad to earth.
Always connect DOOR SENSOR terminal to (-) ground if not used.
DK-2822
TAMPER
N.C.
(+) (–)
DOOR LOCK
DATA
I/O
N.O
EGRESS BUTTON
(INSIDE HOUSE)
56781 2 3 4
(–)
(+)
(–)
*
(+)
ELECTRIC LOCK
CATHODE IN4004
* See Door Lock Selection Jumper
1. SAFE -- For Fail-Safe Electric Lock
2. SECURE -- For Fail-Secure Electric Lock
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